Trying to add text on a plot in python

Question

I am trying to add a simple text us ax.text() inside a plot, but when I run the code, I can see that the text does not appear.


lvl1 = price_max - 0.236 * delta
lvl2 = price_max - 0.382 * delta

fig, ax = plt.subplots()
candlestick_ohlc(ax, ohlc.values, width = 0.6,
                 colorup='green', colordown='red', alpha=0.8)

ax.axhspan(lvl1, price_min, alpha=0.4, color = 'lightsalmon')
ax.text(lvl1, lvl1, '23.6')

plt.show()

no, I mean, why not use either a small df that you build (with hopefully no more than a couple lines of code, e.g. using np.random or similar), or load from some public place (e.g. from sklearn.datasets import load_iris) — Pierre D
– Pierre D, Commented Dec 31, 2020 at 14:20
The data is taken from coinmarketcap api. I can post the full code? — Dfhaa_DK
– Dfhaa_DK, Commented Dec 31, 2020 at 14:22
certainly not. Try to get a similar example that boils your problem down to the essence and can easily be reproduced by any SO-er. You'll be amazed how quickly you'll get an answer then. — Pierre D
– Pierre D, Commented Dec 31, 2020 at 14:23

Joe Ferndz · Accepted Answer · 2020-12-31 14:28:12Z

1

As we do not have the data, I can only give you a few advices from my experience in this kind of case :

Do 'Price' and 'Date' appear as label ? If not, you might have an error prior to the text writing
What is the value of lvl1 and is it a value that appear in both your xaxis and your yaxis ?
To debug, I usually hand-type values instead of lvl1 and watch if the text appears, and where it does appear.

I hope theses three small advices will help you.

edited Dec 31, 2020 at 14:28

Joe Ferndz

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answered Dec 31, 2020 at 14:18

Ludovic H

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4 Comments

Dfhaa_DK Over a year ago

Thank you for your input. Yes, "Price" and "Date" appear as x and y labels. Lvl1 refers to fibonannci retracement values (23.8%)

Dfhaa_DK Over a year ago

Thank you for quick response. The problem is solved now. Happy New Year to everybody.

Ludovic H Over a year ago

Very good ! So, how did you fix it ? Happy new year !

Dfhaa_DK Over a year ago

I just looked into examples with timestamps. I was using the wrong x value lol. So I justed ax.text(dt.date(a date of my choice), lvl1, "my string"). Before, I was using ax.text(lvl1, lvl1 ,"my string") where lvl1 is a fibonacci number I calculated. But the plot as dates on the x-axis, so that is why the string was not showing :D. Sometimes the brain does not function lol.

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